"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : DMS分布式锁
Case Name   : 创建视图，在主节点进行drop操作，备节点执行select
Create At   : 2023/4/25
Owner       : opentestcase033
Description :
    1.创建测试表
    2.创建视图
    3.主节点开启事务A drop view，事务B执行后提交A
    4.备节点开启事务B，查询视图
    5.清理环境
Expect:
    1.成功
    2.成功
    3.执行成功
    4.事务A提交后查询报错
    5.成功
History     :
"""

import os
import time
import unittest

from testcase.utils.Logger import Logger
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.ComThread import ComThread


class DmsOck(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.std_sh = CommonSH('Standby1DbUser')
        self.constant = Constant()
        self.table = 't_dms_ock_0058'
        self.view = 'v_dms_ock_0058'

    def test_dms_ock(self):
        text1 = '-----step1:创建测试表;expect:成功-----'
        self.log.info(text1)
        create_tb = \
            f"drop table if exists {self.table} cascade;" \
            f"create table {self.table}(" \
            f"id int, name varchar, source number) with (segment = on);" \
            f"insert into {self.table} values(1,'haha',92);"
        create_res = self.pri_sh.execut_db_sql(create_tb)
        self.log.info(create_res)
        self.assertTrue(self.constant.CREATE_TABLE_SUCCESS in create_res
                        and self.constant.INSERT_SUCCESS_MSG in create_res,
                        f"执行失败:{text1}")

        text2 = '-----step2:创建视图;expect:成功-----'
        self.log.info(text2)
        create_view_res = self.pri_sh.execut_db_sql(
            f"drop view if exists {self.view};"
            f"create view {self.view} as select * from {self.table};")
        self.log.info(create_view_res)
        self.assertIn(self.constant.CREATE_VIEW_SUCCESS_MSG, create_view_res,
                      f"执行失败:{text2}")

        for sql in ('rollback', 'commit'):
            text3 = '-----step3:主节点开启事务A drop view，事务B执行后提交A;expect:执行成功-----'
            self.log.info(text3)
            sql_a = f'''begin;
            drop view {self.view};
            select pg_sleep(3);
            {sql};'''
            self.log.info(sql_a)
            session1 = ComThread(self.pri_sh.execut_db_sql, args=(sql_a,))
            session1.setDaemon(True)
            session1.start()
            time.sleep(1)

            text4 = '-----step4:备节点开启事务B，查询视图;expect:事务A提交后查询报错-----'
            self.log.info(text4)
            sql_b = f"begin;" \
                    f"select * from {self.view};"
            session2 = ComThread(self.std_sh.execut_db_sql, args=(sql_b,))
            session2.setDaemon(True)
            session2.start()
            session1.join(10)
            session2.join(10)
            result1 = session1.get_result()
            self.log.info(f'session1_results: {result1}')
            result2 = session2.get_result()
            self.log.info(f'session2_results: {result2}')
            self.assertIn(self.constant.DROP_VIEW_SUCCESS_MSG,
                          result1, f"执行失败:{text3}")
            if 'rollback' == sql:
                self.assertIn(self.constant.ROLLBACK_MSG, result1,
                              f"执行失败: {text3}")
                self.assertIn('1 | haha |     92', result2, f"执行失败: {text4}")
            else:
                self.assertIn(self.constant.COMMIT_SUCCESS_MSG, result1,
                              f"执行失败: {text3}")
                self.assertIn('ERROR', result2, f"执行失败: {text4}")

    def tearDown(self):
        text5 = '-----step5:清理环境;expect:成功-----'
        self.log.info(text5)
        drop_tb_res = self.pri_sh.execut_db_sql(
            f"drop table if exists {self.table} cascade;")
        self.log.info(drop_tb_res)
        self.assertIn(self.constant.DROP_TABLE_SUCCESS,
                      drop_tb_res, f"删表失败:{text5}")
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
